Steam-trap.



T. R; WHITTAKER.

STEAM TRAP.

APPLICATION FILED APR. 14. 1908.

902,355. Patented 001:. 27, 1908.

" ill/171,111:

I 4 j 252v jg-liii j atto'anus THOMAS R. WHITTAKER, OF LAWRENCE,MASSACHUSETTS.

STE AM-TRAP.

Specification of Letters Patent.

Patented Oct. 27, 1908 Application filed. April 14, 1908. Serial No.426,985.

To all whom it may concern:

Be it known that I, THOMAS R. WHrr- TAKER, a citizen of the UnitedStates, residing at Lawrence, in the county of Essex and State ofMassachusetts, have invented new and useful improvements in Steam-Traps,of which the following is a specification.

This invention relates to steam traps, and the object of the inventionis to provide a simple, economical automatical steam trap that is notliable to get out of order, and which embodies certain peculiarities ofconstruction and combination of parts, hereinafter fully described andclaimed.

The drawing represents a vertical sectional view of a steam trapconstructed in accordance with my invention.

The numeral 1 represents a shell. This shell 1 is preferably cylindricaland is provided upon its bottom with the legs 2 and has its top providedwith a flange 3 having a series of spaced orifices adapted for thereception of retaining elements 4, by which a dome-shaped top 5 issecured upon the shell 1. The shell 1 is provided with an upper inletpipe 6 and a blow off pipe 7 positioned preferably opposite the inletpipe 6 and in a line with the floor or bottom 8 of the chamber 1. Thefloor 8 of the chamber 1 is provided with a threaded orifice, preferablycentrally located and adapted for the reception of a brass valve seat 9.The valve seat 9 is constructed as a nipple and is provided with anenlarged threaded extension adapted for engagement with the threadedportion of an outlet pipe 10.

Adapted for reception within the valve seat 9 is a needle valve 11. Thisvalve 11 is provided with a suitable stem 12 extending vertically withinthe chamber 1, and the stem 12 is provided with spaced collars 13 and14. The collars 13 and 14 are adjustably secured upon the stem 12, andbetween these collars the stem is provided with a ball float 15. Thefloat 15 is loose upon the stem 12, and is of such a weight as toreadily seat the valve 11 in the valve seat 9 when the float descendsand contacts the lower collar 14.

The floor 8 of the chamber 1 is provided with an upstanding lug or ear16, adapted for pivotal connection with an arm 17 connected with thestem 12 below the collar 14. This arm 17 is provided with a weight 18,having a suitable threaded element 19, by which the weight may beadjusted upon the arm 17. It is to be understood that the weight 18 isheavier than the valve stem 12 and the collars l3 and 14, and is adaptedto retain the valve 11 unseated when the float 15 is raised from contactwith the collar 14, and it is to be also understood that the float 15 isof suflicient weight to overcome the weight 18 and to force the valve 11into engagement with its seat 9.

The collar 13 is provided with an upwardly extending sleeve 20, and thissleeve 20 is adapted for engagement with a stem 21 having a threadedportion 22 coacting with a threaded bushing 23 provided upon the cover5. This stem 21 is provided with an operating handle 24, and is adaptedto be positioned in direct vertical alinement with the valve seat 9 andto serve as a means for guiding and retaining the stem 12 in properalinement with the valve seat 9.

From the above description, taken in connection with the accompanyingdrawing, it will be apparent that when-the water of condensationaccumulates in the pipe the valve will be unseated by the loose float 15rising away from engagement with the collar 14, when the weight 18 willraise the valve to allow the water to escape through the outlet 10.Should the condensation become so great as to raise the float to theposition illustrated in the drawing, the float will contact the collar13 and materially assist the weight 18. When the water of condensationescapes through the outlet 10, the float 15 will descend and contactingthe collar 14 force the valve 11 upon its seat 9. The blow-out pipe 7 isprovided with a suitable valve which may be readily operated to drainall the water from the chamber 1.

Having thus fully described the invention what is claimed as new is:

A steam trap comprising a suitable hollow structure having an inlet atits upper portion and its bottom provided with an outlet, a valvearranged to govern the outlet, a stem extending upward from the valve,ears upon the bottom of the structure, an arm pivoted to the ears andconnected with the valve gage within the hollow extension to guide stem,an adjustable weight upon the arm, the valve stem. ;-C said weightadapted to sustain the valve In testimony whereof I affix my signatureunseated, adjustable collars upon the stem, in presence of twowitnesses.

a float loose upon the stem between the col- THOMAS R WHITTAKER. lars,the upper collar being provided with l/Vitnesses: a hollow extension anda threaded stem pro- GEORGE W. NAYoooK,

vided upon the top of the structure to en- THOMAS WV. WHITTAKER.

